Manutenção 4.0: um estudo sobre a utilização de sensores de baixo custo na inspeção de CCM industriais do trabalho

Abstract

Currently industrial production depends on electrical systems since most drives in the industry use this type of power source. Thus it is vitally important the motor control centers (MCC), for control and protection of electrical equipment. One of the major sources of unavailability of this equipment’s are faults by heating the connections. To avoid such problems, inspections (thermography) are used inside the panels periodically, which demands a lot of time, risk and does not attend full time. Commercial continuous measurement systems exist, but due to the technology employed, they require very high investments. It is found that there is no low-cost system in the market that tracks temperatures at MCC connections and reduces preventive interventions and risk exposure. Thus, the objective of this work is to develop a continuous measurement system in MCC, with low implementation cost in a Brazilian industry. For this, thermistors were installed in the connections, allowing monitoring temperatures that exceed a certain range. In this way, the performance of preventive maintenance was changed to predictive maintenance and interventions will be demanded to the points where inspection is really needed. As a result, the preventive maintenance hours, the exposure time to the panel energized by the maintenance professional will be reduced and consequently the risks, increased reliability and availability of the MCC and consequently the production. The MCC continuous monitoring system will take the first step towards sensing industry 4.0 with benefits for maintenance, production availability and safety.